Callister vs Gio

Baby Name Comparison — 2026

Callister

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Boy #1,163 Most Popular 2 Syllables

"God is gracious"

Origin: Hebrew via Italian

Italian Spanish American

✓ All Clear

Callister Rank #43,579

Gio Rank #1,163

Gio is more popular, ranked #1163 vs #43579 for Callister.

Is Callister or Gio more popular?

Gio is more popular, ranked #1163 compared to Callister at #43579 in the United States.

What do Callister and Gio mean?

Callister means "defender of men" (Greek via Gaelic origin). Gio means "God is gracious" (Hebrew via Italian origin).

Are Callister and Gio boy or girl names?

Callister is primarily a boy name. Gio is primarily a boy name.